Can i bind existing Rich theme to textual app?

[SanctusAnimus]

I have a few Rich tables and panels that share common theme styles, and i'm passing them to render in TextLog (as well as some Labels etc).
I haven't found a way to pass existing theme into the app, for it to highlight properly, so it's currently throwing errors at me.
Am i missing something?

[mrossinek]

I also just ran into this as I was trying to use a custom rich.Theme for the renderables that get passed into textual.
I found a way to do this by doing the following:

from rich.theme import Theme
from textual.app import App

theme = Theme({
    "myprop": "red",
})

class MyApp(App):
    def __init__(*args, **kwargs):
        super().__init__(*args, **kwargs):
        self.console.push_theme(theme)

The rich docs state one should favor use_theme over push_theme but that does not work because we need the theme to basically always be in use (or at least whenever textual renders something...)